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#wildcards Clear
Tags #php #kotlin #bash #go #sql #rust #typescript #html #java #python #files #utils #strings #http #concurrency #async #json #arrays #security #types #crypto #database #dates #format
Java Wildcards — extends vs super (PECS)
Producer-Extends, Consumer-Super. `? extends T` is read-only (you can take items OUT). `? super T` is write-only (you can put items IN). Lets generic APIs accept a wider range of types.
#java #generics #wildcards #pecs #extends
admin @admin ADMIN 2m ago 0
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